<!--
 * @Author: chaiyf
 * @Date: 2022-01-06
 * @LastEditTime: 2022-11-10
 * @LastEditors: chaiyf
 * @Description:
 * @FilePath: \module5h:\myWork\study\lago-class-note\Part3\module3\realworld-nuxtjs\pages\home\index.vue
-->
<template>
  <div class="home-page">
    <div class="banner">
      <div class="container">
        <h1 class="logo-font">来电科技</h1>
        <p>A place to share your knowledge.</p>
      </div>
    </div>

    <div class="container page">
      <div class="row">

        <div class="col-md-9">
          <div class="feed-toggle">
            <ul class="nav nav-pills outline-active">
              <li v-if="user" class="nav-item">
                <nuxt-link
                  class="nav-link"
                  :class="{ active: tab === 'your_feed' }"
                  exact
                  :to="{ name: 'home', query: { tab: 'your_feed' } }">
                  Your Feed
                </nuxt-link>
              </li>
              <li class="nav-item">
                <nuxt-link
                  class="nav-link"
                  :class="{
                    active: tab === 'global_feed'
                  }"
                  exact
                  :to="{
                    name: 'home'
                  }">Global Feed</nuxt-link>
              </li>
              <li v-if="tag" class="nav-item">
                <nuxt-link
                  class="nav-link"
                  :class="{
                    active: tab === 'tag'
                  }"
                  exact
                  :to="{
                    name: 'home',
                    query: {
                      tab: 'tag',
                      tag: tag
                    }
                  }"># {{ tag }}</nuxt-link>
              </li>
            </ul>
          </div>

          <div
            v-if="Array.isArray(articles)"
            class="article-preview"
            v-for="article in articles"
            :key="article.slug">
            <div class="article-meta">
              <nuxt-link :to="{
                name: 'profile',
                params: {
                  username: article.author.username
                }
              }">
                <img :src="article.author.image" />
              </nuxt-link>
              <div class="info">
                <nuxt-link class="author" :to="{
                  name: 'profile',
                  params: {
                    username: article.author.username
                  }
                }">
                  {{ article.author.username }}
                </nuxt-link>
                <span class="date">{{ article.createdAt | date('MMM DD, YYYY') }}</span>
              </div>
              <button
                class="btn btn-outline-primary btn-sm pull-xs-right"
                :class="{
                  active: article.favorited
                }"
                @click="onFavorite(article)"
                :disabled="article.favoriteDisabled">
                <i class="ion-heart"></i> {{ article.favoritesCount }}
              </button>
            </div>
            <nuxt-link
              class="preview-link"
              :to="{
                name: 'article',
                params: {
                  slug: article.slug
                }
              }">
              <h1>{{ article.title }}</h1>
              <p>{{ article.description }}</p>
              <span>Read more...</span>
            </nuxt-link>
          </div>

          <!-- 分页列表 -->
          <nav>
            <ul class="pagination">
              <li
                class="page-item"
                :class="{
                  active: item === page
                }"
                v-for="item in totalPage"
                :key="item">
                <nuxt-link
                  class="page-link"
                  :to="{
                    name: 'home',
                    query: {
                      page: item,
                      tag: $route.query.tag,
                      tab
                    }
                  }">{{ item }}</nuxt-link>
              </li>
            </ul>
          </nav>
          <!-- /分页列表 -->

        </div>

        <div class="col-md-3">
          <div class="sidebar">
            <p>Popular Tags</p>

            <div class="tag-list">
              <nuxt-link
                :to="{
                  name: 'home',
                  query: {
                    tab: 'tag',
                    tag: item
                  }
                }"
                class="tag-pill tag-default"
                v-for="item in tags"
                :key="item">{{ item }}</nuxt-link>
            </div>
          </div>
        </div>

      </div>
    </div>

  </div>
</template>

<script>
import { mapState } from 'vuex'
import { getArticles, getFeedArticles } from '@/api/article'
import { getTags } from '@/api/tag'
export default {
  middleware: 'authenticated',
  name: 'HomePage',
  components: {},
  props: {},
  watchQuery: ['page', 'tag', 'tab'],
  async asyncData({ query, store }) {
    const page = Number.parseInt(query.page || 1)
    const limit = 20
    const { tag, tab = 'global_feed' } = query
    const { user } = store.state
    const getArticlesFn = tab === 'your_feed' && user ? getFeedArticles : getArticles
    const [articlesRes, tagRes] = await Promise.all([
      getArticlesFn({
        limit,
        offset: (page - 1) * limit,
        tag,
        tab,

      }),
      getTags()
    ])
    const { articles = [], articlesCount = 0 } = articlesRes.data
    const { tags = [] } = tagRes.data
    return {
      limit,
      page,
      articles,
      articlesCount,
      tags,
      tag,
      tab
    }
  },
  data() {
    return {
      article: {},
      tag: ''
    }
  },
  computed: {
    ...mapState(['user']),
    totalPage() {
      return Math.ceil(this.articlesCount / this.limit)
    }
  },
  watch: {},
  created() {},
  mounted() {},
  methods: {
    onFavorite() {}
  }
}
</script>

<style lang="scss">
</style>
